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Analysis of the burning dummy clothes

I have seen China's first "Burning Dumper" in Donghua University. Its most important role is that the fire is substitute, and the alternative will accept the fire test. Unparalleled with us thermal manikin Not much, "Burning fake people" height 1.75 meters, with 135 sensors, shoulders, neck, elbow, knee, etc., can simulate sitting, running, squat, etc. E.

"Rescuers are moving in the fire, such design is closer to the real environment of fire rescue, and also add more targeted and effectiveness of the performance of protective clothing." Li Li Professor Jun said.

In the combustion simulation environment laboratory, I saw "burning fake people" wearing helmet, wearing gloves, worn in full protective clothing, under the firepower of 12 fireworks, instant is up to 3 meters of flames Enclosed, 6 seconds after the flame is off. Magic is that after the fire, I saw the color of the fire service change, and there was no damage, deformation, etc.

Developers introduced that the carbonized layer formed by fire-fighting blacks can effectively block heat transfer, which can withstand high temperatures at 220 ° C in a short time, up to 16 seconds in the fire sea. In the dangerous environment of the fire, people need to avoid fire damage by wearing heat shield. Heat protective clothing is widely used in protecting firefighters, steelmaking workers, and workers engaged in other high temperature dangerous places. As clothing increases in the flame, the surface temperature of the clothing gradually increases due to the direct burning of the flame, and a large amount of heat transfer causes the air layer and the surface temperature of the human body. The thermal physical properties of the clothing not only the hot physical properties of the fabric itself not only change, but also after leaving the flashfire environment, because the surface temperature of the clothing will remain in a higher range, and with the clothes And the temperature difference between the surface of the human body, continuously producing heat transfer, the surface temperature of the human body continues to rise. Studies have shown that burns may occur after the end of the flashfire, and the energy stored in additional fabric is an important factor for predicting burns. Therefore, even if the heat shield can abut the flame short time combustion, the clothing can still be caused by burn during the cooling process. Therefore, research on the temperature change of the human surface after burning is particularly important.

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